Owners Manual

Installing and removing sled components

Topics:

• Safety instructions

•

Before working inside your sled

• After working inside your sled

• Recommended tools

• PowerEdge MX840c sled

• Sled cover

• Air shroud

• Processor expansion module

• Drives

• Drive backplane

• Cable routing

• Drive cage

• Battery backup unit

• Control panel

• System memory

• Processors and heat sinks

• iDRAC card

• PERC cards

• Optional Internal dual SD module

• M.2 BOSS module

• Mezzanine card

• Optional internal USB memory key

• System battery

• System board

• Trusted Platform Module

Safety instructions

NOTE:

Whenever you need to lift the system, get others to assist you. To avoid injury, do not attempt to lift the system by

yourself.

CAUTION: Many repairs may only be done by a certified service technician. You should only perform

troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or

telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by

your warranty. Read and follow the safety instructions that are shipped with your product.

NOTE: It is recommended that you always use an antistatic mat and antistatic strap while working on components inside

the system.

CAUTION: To ensure proper operation and cooling, all bays in the system and system fans must be always

populated with a component or a blank.

Installing and removing sled components 17